Back to results
US 9,958,093 B2Granted
Flexible hose assembly with multiple flow passages
AssigneeParker-Hannifin Corporation
InventorsRobert Roger Pelletier, Raman Ras
Life of this patent
Estimating the term…
Abstract
Provided is a flexible hose assembly having a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube and a flexible hose surrounding the flexible tube and forming therewith a second fuel passage. The flexible tube provides internal support for the flexible hose while also allowing for flow of fuel through the second fuel passage and the fuel passages are separate from one another along a length of the flexible hose assembly. When one of the fuel passages is in a low flow or no flow condition, fuel flowing through the other of the fuel passages acts to cool the fuel passage in the low flow or no flow condition to prevent stagnant fuel in the passage from heating up and coking.
Claims21
A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including:
- a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;
- a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;
- wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;
- an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube;
- and
- a connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,
- wherein the flexible tube has a plurality of convolutes extending radially outward from a body of the flexible tube and along a length thereof.
4 more elements
A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including:
- a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;
- a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;
- wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;
- an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube;
- a connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage;
- and
- at least one braze joint between the inner tube and the connector for maintaining the second flow passage therebetween.
4 more elements
A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including:
- a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;
- a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;
- wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;
- an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube;
- and
- a connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,
- wherein the flexible tube is a spiral tube and the second fuel passage is a spiral fuel passage between the flexible tube and flexible hose.
4 more elements
A flexible hose assembly configured to be coupled to a fuel manifold, the flexible hose assembly including:
- a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;
- a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;
- wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;
- an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube;
- and
- a connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,
- wherein the flexible tube is a bellows or beaded tube.
4 more elements
A fuel manifold and flexible hose assembly including:
- a fuel manifold having a manifold fitting surrounding a manifold hose;
- and
- a flexible hose assembly configured to be coupled to the fuel manifold, the flexible hose assembly including
- a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;
- a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;
- wherein the flexible tube provides internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;
- an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube;
- and
- a connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage, the connector having a threaded portion onto which a nut can be threaded for coupling the flexible hose assembly to the fuel manifold, and the threaded portion surrounding each of the first fuel passage and the second fuel passage,
- wherein the connector has a proximal end coupled to the manifold fitting.
7 more elements
A flexible hose assembly configured to be coupled to an external component, the flexible hose assembly including:
- a flexible tube for conveying fuel through a first fuel passage formed interiorly of the flexible tube;
- and
- a flexible hose surrounding the flexible tube and forming therewith a second fuel passage;
- wherein the flexible tube is convoluted to provide internal support for the flexible hose when contacting an inner diameter of the flexible hose at a plurality of locations along the length of the flexible hose, which locations are longitudinally-spaced apart to allow for flow of fuel through the second fuel passage;
- and
- an inner tube coupled to the flexible tube, the first fuel passage being formed interiorly of the inner tube and the flexible tube;
- and
- a connector at least partially surrounding the inner tube and coupled to the flexible hose, the connector and flexible hose forming with the inner tube and flexible tube the second fuel passage,
- wherein the connector is configured for connection to the external component, and wherein the first fuel passage and the second fuel passage extend axially to the axial end of the flexible hose assembly and terminate at axially opening outlets at the axial end of the flexible hose assembly.
6 more elements
Dependencies are inferred from the claim text.